fixed callback unhandled exceptions
Updated to version 1.5.84 (copied from 'EXP-MP13x_dshowhelper_DWM_mod' branch 1.6.684 version code).
TimeSource files reverted to current master version.
Merge branch 'FEAT-4357-Update_dshowhelper_to_v684_code'
Mantis #4353 : Fix broken resume dialog for DVD/Video (mkv/avi etc.) / Define BdDefault and BdRemux Title value
Fix Mantis #4322 (Use max speed for generated thumb only for GUIPictures and MP Config)
Mantis #4322 : Set ThreadPriority to BelowNormal to make it PC usable when running Thumbnail scan (for MP Config and MP GUI) / Enable Rotation
Merge remote-tracking branch 'remotes/origin/BUG-4331-TvService_Crash_Unhandled_Exception_In_Callbacks'
Merge branch 'refs/heads/master' into EXP-Windows-7-Half-Full-Screen

Conflicts:
	mediaportal/WindowPlugins/GUISettings/MyPictures/GUISettingsPictures_Database.cs
	mediaportal/WindowPlugins/GUIVideoFiles/GUIVideoFiles.cs

Conflicts resolved by re-applying Mantis #3734